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On the determination of the reverse transformations in shock-loaded solids with in-material piezoresistance gauges

Z Rosenberg

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LETTER TO THE EDITOR

The onset of the reverse transition in phase-transforming solids, under planar loading, is discussed. It is shown that the earlier interpretation, which correlates this onset with the stress level just prior to the rarefaction shock, is more adequate than a different interpretation which was suggested recently. According to this interpretation, it is impossible to determine the exact pressure at the reverse transition with in-material gauges. The author brings three arguments which oppose this new interpretation based on the expected shapes of in-material piezoresistance gauges. If the new interpretation is right then measured stress histories in shock-loaded Armco iron specimens, with manganin gauges, should look differently than they do, as recorded by three different groups.


PACS

64.70.K- Solid–solid transitions

07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

62.50.-p High-pressure effects in solids and liquids

77.65.-j Piezoelectricity and electromechanical effects

Subjects

Condensed matter: electrical, magnetic and optical

Instrumentation and measurement

Condensed matter: structural, mechanical & thermal

Dates

Issue 8 (14 August 1987)



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